Comma Separator Tool: Convert a List to Comma Separated Text
Paste a column of items and instantly convert it into a comma-separated list. Great for SQL IN clauses, email lists, and ad keywords.
Quick answer
A comma separator turns a vertical list into one comma-delimited line (and back again) — it is not the same as a CSV file, which adds quoting rules and one record per row.
- Cost: free, no signup or limits.
- Privacy: runs 100% in your browser; text is never uploaded.
- Works on: desktop and mobile browsers, offline once loaded.
- Category: Content Cleanup.
Common conversions
How to Use
- 1.Paste a vertical list (one item per line).
- 2.Choose a delimiter if you want something other than a comma.
- 3.Copy the single-line separated output.
List to comma separated, and comma to list
Both directions matter. Going list → comma delimited is what you need for a SQL IN clause, an ad-platform keyword field, or a bulk email 'To' box. Going comma → list is what you need when a colleague sends a wall of comma separated values and you want one item per line to sort, dedupe or count.
Quotes, spaces and trailing commas
Wrap each value in single or double quotes when the target is SQL or JSON, add a space after each comma for human-readable prose, and drop the trailing comma so the string pastes cleanly. Blank lines are skipped and duplicates removed on request, so the output is ready to use without hand-editing.
FAQ
Can I use a different delimiter?
Yes — choose comma, semicolon, pipe, or type a custom separator.
Does it remove duplicates?
Optional. Toggle 'Remove duplicates' to keep only unique values.
Are empty lines included?
Optional. Toggle 'Skip blank lines' to leave empty values out.